DE102018101591A1 - Bicycle chain arrangement - Google Patents

Abstract

Basically, a bicycle sprocket assembly is provided that includes a sprocket support member. The sprocket support member includes a hub engagement portion, a first sprocket support member, and a second sprocket support member. The first sprocket support member extends from the hub engagement portion in a first axial direction parallel to a rotational center axis of the bicycle sprocket assembly. The second sprocket support member extends from the hub engagement portion in a second axial direction parallel to the rotational center axis. The second axial direction is opposite to the first axial direction. At least one of the first sprocket support member and the second sprocket support member includes a plurality of sprocket support arms.

Description

BACKGROUND

Cross reference to other applications

This application claims the benefit of the US patent application US 15 / 436,590 filed on 17 February 2017. The entire disclosure of the US patent application US 15 / 436,590 is hereby incorporated by reference.

Field of the invention

This invention relates generally to a bicycle sprocket assembly.

background information

Cycling is becoming an increasingly popular form of recreation, as is a means of transport. In addition, cycling has become a very popular competitive sport for amateurs and professionals. Whether the bicycle is used for leisure, transportation or competition, the bicycle industry is constantly improving the various components of the bicycle. One area that has been extensively redesigned over the years is the bicycle powertrain. In particular, bicycle component manufacturers have continually improved the shifting performance of various shifting components, such as shifters, derailleurs, chains and sprockets.

One particular component of the bicycle powertrain that has been extensively revised in recent years is the sprocket assembly.

SUMMARY

In general, the present disclosure relates to various features of a bicycle sprocket assembly.

In view of the prior art and a first aspect of the present disclosure, a bicycle sprocket assembly is generally provided that includes a sprocket support member. The sprocket support member includes a hub engagement portion, a first sprocket support member, and a second sprocket support member. The first sprocket support member extends from the hub engagement portion in a first axial direction parallel to a rotational center axis of the bicycle sprocket assembly. The second sprocket support member extends from the hub engagement portion in a second axial direction parallel to the rotational center axis. The second axial direction is opposite to the first axial direction. At least one of the first sprocket support member and the second sprocket support member includes a plurality of sprocket support arms. According to the first aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce an overall weight of the bicycle sprocket assembly.

According to a second aspect of the present invention, the bicycle sprocket assembly of the first aspect is arranged such that the plurality of sprocket support arms are spaced from each other in a circumferential direction with respect to the rotational center axis. According to the second aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce an overall weight of the bicycle sprocket assembly.

According to a third aspect of the present invention, the bicycle sprocket assembly of the first or second aspect is arranged such that each of the sprocket support arms has a proximal end and a distal end, and the plurality of sprocket support arms extend so that the distal end is farther from the rotational center axis than the proximal end. According to the third aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce an overall weight of the bicycle sprocket assembly.

According to a fourth aspect of the present invention, the bicycle sprocket assembly of the first or second aspect is arranged such that each of the sprocket support arms has a proximal end and a distal end and the plurality of sprocket support arms extend such that the proximal end is farther from the rotational center axis than the distal end. According to the fourth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce an overall weight of the bicycle sprocket assembly.

According to a fifth aspect of the present invention, the bicycle sprocket assembly of the first aspect is arranged such that the first sprocket support member includes a plurality of first sprocket support arms and the second sprocket support member includes a plurality of second sprocket support arms. According to the fifth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce an overall weight of the bicycle sprocket assembly.

According to a sixth aspect of the present invention, the bicycle sprocket assembly according to the fifth aspect is arranged such that the plurality of first sprocket support arms in a circumferential direction with respect to the rotational center axis spaced from each other and the plurality of second Kettenradstützarme are spaced apart from each other in the circumferential direction. According to the sixth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce an overall weight of the bicycle sprocket assembly.

According to a seventh aspect of the present invention, the bicycle sprocket assembly of the fifth or sixth aspect is arranged such that each of the first sprocket support arms has a first proximal end and a first distal end and each of the second sprocket support arms has a second proximal end and a second distal end. The plurality of first sprocket support arms extend such that the first distal end is farther from the rotational center axis than the first proximal end. The plurality of second sprocket support arms extend such that the second proximal end is farther from the rotational center axis than the second distal end. According to the seventh aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce the overall weight of the bicycle sprocket assembly.

According to an eighth aspect of the present invention, the bicycle sprocket assembly according to any one of the first to seventh aspects is arranged such that the sprocket support member is made of a non-metallic material. According to the eighth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce an overall weight of the bicycle sprocket assembly.

According to a ninth aspect of the present invention, the bicycle sprocket assembly according to the eighth aspect is arranged such that the non-metallic material comprises fiber reinforced plastic. According to the ninth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce a total weight of the bicycle sprocket assembly while maintaining sufficient rigidity.

According to a tenth aspect of the present invention, the bicycle sprocket assembly according to any one of the first to seventh aspects is arranged so that the sprocket support member is made of a metallic material. According to the tenth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to maintain sufficient rigidity of the bicycle sprocket assembly.

According to an eleventh aspect of the present invention, the bicycle sprocket assembly according to the tenth aspect is arranged so that the metallic material comprises an aluminum alloy. According to the eleventh aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce a total weight of the bicycle sprocket assembly while maintaining sufficient rigidity.

According to a twelfth aspect of the present invention, the bicycle sprocket assembly according to any one of the first to eleventh aspects is arranged such that the hub engagement portion has a radially inner peripheral surface and a radially outer peripheral surface, and a hub engagement profile is formed on the radially inner circumferential surface. According to the twelfth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to provide a lightweight bicycle sprocket assembly.

According to a thirteenth aspect of the present invention, the bicycle sprocket assembly according to the twelfth aspect is arranged such that the hub engagement profile comprises a plurality of splines. According to the thirteenth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to effectively transmit torque from the bicycle sprocket assembly to a hub assembly.

According to a fourteenth aspect of the present invention, the bicycle sprocket assembly according to the twelfth or thirteenth aspect is arranged such that the radially outer peripheral surface is configured to support at least one bicycle sprocket. According to the fourteenth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to sufficiently support a lightweight bicycle sprocket assembly.

According to a fifteenth aspect of the present invention, the bicycle sprocket assembly according to any one of the second to fourth aspects is arranged such that each of the sprocket support arms has a plurality of radially extending parts and a plurality of axially extending parts. The plurality of radially extending parts and the plurality of axially extending parts are alternately arranged in an axial direction parallel to the rotation center axis. According to the fifteenth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to sufficiently support a plurality of sprockets on a sprocket support member.

According to a sixteenth aspect of the present invention, the bicycle sprocket assembly according to any one of the fifth to seventh aspects such that each of the first sprocket support arms has a plurality of first radially extending portions, and a plurality of first axially extending portions, each of the second sprocket support arms having a plurality of second radially extending portions and a plurality of second axially extending portions. The plurality of first radially extending parts and the plurality of first axially extending parts are alternately arranged in an axial direction parallel to the rotational center axis. The plurality of second radially extending parts and the second plurality of axially extending parts are alternately arranged in an axial direction parallel to the rotational center axis. According to the sixteenth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to sufficiently support a plurality of sprockets on a sprocket support member.

According to a seventeenth aspect of the present invention, the bicycle sprocket assembly according to any one of the second to fourth and fifteenth aspects is arranged such that each of the sprocket support arms has a proximal end and a distal end. The distal end is adapted to be spaced from a bicycle hub assembly in a radial direction with respect to the rotational center axis in a state in which the bicycle sprocket assembly is attached to the bicycle hub assembly. According to the seventeenth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce an overall weight of the bicycle sprocket assembly.

According to an eighteenth aspect of the present invention, the bicycle sprocket assembly according to any one of the fifth to seventh and sixteenth aspects is arranged such that each of the first sprocket support arms has a first proximal end and a first distal end and each of the second sprocket support arms has a second proximal end and a second one having distal end. The first distal end is configured to be spaced from a bicycle hub assembly in a radial direction with respect to the rotational center axis in a state in which the bicycle sprocket assembly is attached to the bicycle hub assembly. The second proximal end is configured to be spaced from a bicycle hub assembly in a radial direction with respect to the rotational center axis in a state in which the bicycle sprocket assembly is attached to the bicycle hub assembly. According to the eighteenth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to reduce an overall weight of the bicycle sprocket assembly.

According to a nineteenth aspect of the present invention, the bicycle sprocket assembly according to any one of the second to fourth, fifteenth, and seventeenth aspects is arranged such that each of the plurality of sprocket support arms has a radially inner peripheral surface and a radially outer circumferential surface. The radially outer peripheral surface is configured to support at least one bicycle sprocket. According to the nineteenth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to effectively support a bicycle sprocket on a sprocket support member.

According to a twentieth aspect of the present invention, the bicycle sprocket assembly according to the nineteenth aspect is arranged such that at least one reinforcing portion is provided on the radially inner peripheral surface. According to the twentieth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to improve the rigidity of a sprocket support member.

According to a twenty-first aspect of the present invention, the bicycle sprocket assembly according to any one of the fifth to seventh, sixteenth and eighteenth aspects is arranged such that each of the plurality of first sprocket support arms has a first radially inner peripheral surface and a first radially outer circumferential surface, and each of the plurality of second sprocket support arms a second radially inner peripheral surface and a second radially outer peripheral surface. The first radially outer peripheral surface is configured to support at least one bicycle sprocket. The second radially outer peripheral surface is configured to support at least one bicycle sprocket. According to the twenty-first aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to effectively support a bicycle sprocket on a sprocket mounting member.

According to a twenty-second aspect of the present invention, the bicycle sprocket assembly according to the twenty-first aspect is arranged such that at least one reinforcing portion is provided on at least one of the first radially inner peripheral surface and the second radially inner circumferential surface. According to the twenty-second aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to improve the rigidity of a sprocket support member.

According to a twenty-third aspect of the present invention, the bicycle sprocket assembly according to any one of the first to twenty-second aspects is arranged to include a plurality of bicycle sprockets. A The tooth number difference between a smallest sprocket of the plurality of sprocket wheels and a largest sprocket of the plural sprocket wheels is equal to or greater than twenty-five. According to the twenty-third aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to provide a bicycle sprocket assembly having a wide gear ratio.

According to a twenty-fourth aspect of the present invention, the bicycle sprocket assembly according to any one of the first to twenty-second aspects is arranged to include a plurality of bicycle sprockets. A tooth number difference between a smallest sprocket of the plurality of sprocket wheels and a largest sprocket of the plural sprocket wheels is equal to or greater than thirty-five. According to the twenty-fourth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to provide a bicycle sprocket assembly having a wide gear ratio.

According to a twenty-fifth aspect of the present invention, the bicycle sprocket assembly according to any one of the first to twenty-fourth aspects is arranged to include a plurality of bicycle sprockets. A largest sprocket of the plurality of sprocket wheels has a total number of teeth equal to or greater than forty-four. According to the twenty-fifth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to provide a bicycle sprocket assembly having a wide gear ratio.

According to a twenty-sixth aspect of the present invention, the bicycle sprocket assembly according to any one of the first to twenty-fifth aspects is arranged to include a plurality of bicycle sprockets. A smallest sprocket of the plurality of sprocket wheels has a total number of teeth equal to or less than ten. According to the twenty-sixth aspect of the present invention, there is provided a bicycle sprocket assembly in which it is possible to provide a bicycle sprocket assembly having a wide gear ratio.

Other objects, features, aspects and advantages of the disclosed bicycle sprocket assembly will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the accompanying drawings, discloses exemplary embodiments of the bicycle sprocket assembly.

list of figures

• 1 ist eine perspektivische Ansicht einer hinteren Fahrradkettenradanordnung, die an einer hinteren Fahrradnabenanordnung nach einer dargestellten Ausführungsform angebracht ist;
• 2 ist eine hintere Aufrissansicht der hinteren Nabenanordnung und der hinteren Kettenradanordnung von 1;
• 3 ist eine hintere Aufrissansicht im Querschnitt der hinteren Nabenanordnung und der hinteren Kettenradanordnung von 2;
• 4 ist eine perspektivische Explosionsansicht der hinteren Nabenanordnung und der hinteren Kettenradanordnung von 1;
• 5 ist eine perspektivische hintere Aufrissansicht eines Kettenradstützelements der hinteren Nabenanordnung von 4;
• 6 ist eine perspektivische Vorderansicht des Kettenradstützelements der hinteren Nabenanordnung von 5;
• 7 ist eine hintere perspektivische Teilansicht im Querschnitt der hinteren Fahrradkettenradanordnung von 2, in der ein Kettenradstützelement aus einem metallischen Material hergestellt ist;
• 8 ist eine hintere perspektivische Teilansicht im Querschnitt der hinteren Fahrradkettenradanordnung von 2, in der ein Kettenradstützelement aus einem nichtmetallischen Material hergestellt ist;
• 9 ist eine Außenaufrissansicht einer ersten alternativen hinteren Kettenradanordnung mit elf hinteren Kettenrädern; und
• 10 ist eine Außenaufrissansicht einer zweiten alternativen hinteren Kettenradanordnung mit zwölf hinteren Kettenrädern.

Reference will now be made to the accompanying drawings, which form a part of this original disclosure:

• 1 Figure 11 is a perspective view of a bicycle rear sprocket assembly mounted to a rear bicycle hub assembly in accordance with an illustrated embodiment;
• 2 FIG. 14 is a rear elevational view of the rear hub assembly and the rear sprocket assembly of FIG 1 ;
• 3 is a rear elevational view in cross section of the rear hub assembly and the rear sprocket assembly of 2 ;
• 4 is an exploded perspective view of the rear hub assembly and the rear sprocket assembly of 1 ;
• 5 FIG. 13 is a rear perspective rear view of a sprocket support member of the rear hub assembly of FIG 4 ;
• 6 FIG. 16 is a front perspective view of the sprocket support member of the rear hub assembly of FIG 5 ;
• 7 is a rear partial perspective view in cross section of the rear Fahrradkettenradanordnung of 2 in which a sprocket support member is made of a metallic material;
• 8th is a rear partial perspective view in cross section of the rear Fahrradkettenradanordnung of 2 in which a sprocket support member is made of a non-metallic material;
• 9 Figure 11 is an exterior elevational view of a first alternative rear sprocket assembly having eleven rear sprockets; and
• 10 Figure 11 is an external elevation view of a second alternate rear sprocket assembly having twelve rear sprockets.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS

Selected embodiments will now be explained with reference to the drawings. It will be apparent to those skilled in the bicycle field from this disclosure that the following descriptions of the exemplary embodiments are provided for illustration only, and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

Since the various parts of a bicycle are well known in the bicycle art, these parts of the bicycle will not be discussed or illustrated in detail herein unless they are modified in accordance with the exemplary embodiments of the present invention. It will be apparent to those skilled in the bicycle art from this disclosure that a rear bicycle sprocket assembly according to the exemplary embodiments of the present invention may have a different number of sprockets.

With initial reference to the 1 to 4 is a rear bicycle hub assembly 10 shown at the rear bicycle sprocket assembly 11 is mounted according to a first exemplary embodiment. The rear bicycle hub assembly 10 essentially comprises a hub axle 12 and a hub shell 13 , The hub axle 12 is a conventional element with a shaft section 12a with a first end cap 12b connected to a first end of the hub axle 12 connected, and a second end cap 12c connected to a second end of the hub axle 12 connected is. The hub axle 12 defines a rotational center axis A. The hub shell 13 is rotatable on the hub axle 12 mounted to rotate about the rotational center axis A. The hub shell has a central tubular body 13a and a pair of spoke attachment flanges 13b and 13c extending in a radial direction from the central tubular body 13a extend to the outside.

As in 3 is shown at least one bearing assembly for rotatably supporting the hub shell 13 at the hub axle 12 intended. In the illustrated exemplary embodiment, the hub shell is 13 rotatable on the hub axle 12 through a pair of bearing assemblies 15a and 15b appropriate. The bearing arrangements 15a and 15b are conventional parts that are well known in the bicycle field, and therefore the bearing arrangements become 15a and Figure 15b is not discussed herein or explained in detail. Other bearing arrangements may be used as needed and / or desired.

Now up 3 Referring to FIG. 1, the rear bicycle hub assembly 10 further includes a sprocket support body 16 on. At least one bearing arrangement 17 is for rotatably supporting the Kettenradstützkörpers 16 at the hub axle 12 intended. In the illustrated exemplary embodiment, the sprocket support body is 16 rotatable on the hub axle 12 mounted by the bearing assembly 17, although any suitable number of bearing arrangements can be used. Rolling or spilling occurs when the sprocket support body 16 ceases to rotate or in a non-drive rotational direction (ie, counterclockwise about the rotational center axis A from the sprocket support body side of the rear bicycle hub assembly 10 As seen in FIG. 10, the hub shell 13 moves in a drive rotational direction (ie, clockwise about the rotation center axis A from the sprocket receiving body side of the rear bicycle hub assembly 10 seen from) turns.

With reference to FIGS. 1-8, a rear bicycle sprocket assembly is shown 11 according to a first exemplary embodiment of the present invention. As in the 1 to 4 shown has the rear bicycle sprocket assembly 11 nine sprockets 18 to 26 on. The sprockets 18 to 26 are axially spaced apart at predetermined intervals. The sprockets 18 to 26 are set up so that they are firmly attached to the rear hub of the bicycle 10 are attached so that the sprockets 18 to 26 are arranged to rotate together about the rotational center axis A. The sprockets 18 to 26 typically rotate together in a forward rotational direction D (eg, in a clockwise direction, as in FIG 1 shown) when the driver steps in a forward (clockwise) direction to propel the bicycle in a forward direction. It will be apparent to those skilled in the bicycle art from this disclosure that the rear bicycle sprocket assembly may include fewer or more sprockets.

As in the 1 to 4 shown are the sprockets 18 to 26 hard, rigid disk-shaped elements formed of a suitable material, such as a metallic material. In the illustrated exemplary embodiment, the sprockets are 18 to 26 each a one-piece, unitary member formed of a metallic material suitable for a bicycle sprocket. The sprockets 18 to 26 may have modified teeth, such as teeth with sloped surfaces and / or recesses, to facilitate downshifting and upshifting.

As in the 3 . 5 and 6 As shown, the bicycle sprocket assembly 11 includes a sprocket support member 28 configured to support the plurality of sprockets 18 to 26. The sprocket support element 28 includes a hub engaging portion 30 which is set up with the rear bicycle hub assembly 10 engages. As in the 3 . 7 and 8th As shown, the hub engaging portion comprises 30 a radially inner peripheral surface 30a and a radially outer peripheral surface 30b , A hub engagement profile 30c is at the radially inner peripheral surface 30a trained, as in the 7 and 8th is shown. A stop surface 30d extends radially outward with respect to the rotational center axis A. The radially outer peripheral surface 30b is designed so that it at least one sprocket, eg the sprocket 22 , supports. The hub engagement profile 30c facilitates transmission of torque from the bicycle rear sprocket assembly 11 to the rear bicycle hub assembly 10 , Preferably, the hub engagement profile comprises 30c at the radially inner peripheral surface 30a of the hub engagement portion 30 is formed, a plurality of splines, which are adapted to be in an associated splined portion 16a the rear bicycle hub assembly 10 intervene. The splined section 16a may be a splined ring attached to the sprocket support body 16 is arranged. Alternatively, the splined portion may be configured in any suitable manner to engage with the splined radially inner peripheral surface 30a of the hub engagement section 30 to be engaged. The torque is correspondingly from the rear bicycle sprocket assembly 11 about the splined connection between the hub engaging portion 30 and the sprocket support body 16 to the rear bicycle hub assembly 10 transfer. The stop surface 30d lies on a stop element 16b the rear bicycle hub assembly 10 if the hub engagement profile 30c with the splined section 16a the rear bicycle hub assembly 10 engaged.

The sprocket support element 28 includes a first sprocket support member 32 and a second sprocket support member 34 , as in 3 and 5 to 8th shown. The first sprocket support element 32 extends from the hub engaging portion 30 in a first axial direction D1 parallel to the rotational center axis A of the bicycle sprocket assembly 11 , The second sprocket support element 34 extends from the hub engaging portion 30 in a second axial direction D2 parallel to the rotational center axis A. The second axial direction D2 is opposite to the first axial direction D1.

As in the 5 and 6 shown contains at least one of the first sprocket support member 32 and the second sprocket support member 34 a plurality of sprocket support arms, such as first sprocket support arms 35 or second sprocket arms 42 , The plurality of sprocket support arms, such as the first sprocket support arms 35 or the second sprocket support arms 42 , are spaced from each other in a circumferential direction with respect to the rotational center axis A. Each of the sprocket support arms has a proximal end and a distal end. For example, each of the first sprocket support arm 35 a proximal end 35a and a distal end 35b on, and each of the second sprocket support arm 42 has a proximal end 42a and a distal end 42b on, like in 7 and 8th shown. The plurality of sprocket support arms extend so that the distal end is farther from the central axis of rotation A than the proximal end, such as the first distal end 35b the first sprocket support arms 35 which is farther from the rotational central axis A than the first proximal end 35a. Additionally or alternatively, the plurality of sprocket support arms extend such that the proximal end is spaced further from the rotational center axis A than the distal end, such as the second proximal end 42a the sprocket support arms 42 which are spaced farther from the central axis of rotation A than the second distal end 42b.

Each of the sprocket support arms has a plurality of radially extending portions, such as first and second radially extending portions 35c and 42c the first and second Kettenradstützarme 35 respectively. 42 and a plurality of first axially extending portions, such as the first and second axially extending portions 35d and 42d the first and second Kettenradstützarme 35 respectively. 42 , The plurality of radially extending parts and the plurality of axially extending parts are alternately arranged in an axial direction parallel to the rotational center axis A. As in the 7 and 8th As shown, the alternately disposed radially extending portions and the axially extending portions provide a plurality of steps adapted to support the plurality of bicycle sprockets. The first radially extending portions 35c and the first axially extending portions 35d are alternately in the first axial direction D1 of the hub engaging portion 30 arranged to form a plurality of steps that are adapted to the plurality of sprockets, such as sprockets 18 to 21 to support. The second radially extending parts 42c and the second axially extending parts 42d are alternately arranged in the second axial direction D2 of the hub engaging portion 30 to form a plurality of steps that are adapted to the plurality of sprockets, such as sprockets 23 to 26 to support.

The distal end, such as the first distal end 35b , is set up to be in a state where the bicycle sprocket assembly 11 at the bicycle hub assembly 10 is mounted, in a radial direction with respect to the rotational center axis A of the bicycle hub assembly 10 is spaced as in 3 shown. The first distal end 35b each of the first sprocket support arms 35 is from the sprocket support body 16 in the radial direction with respect to the rotational center axis A spaced. The second distal end 42b of each of the second sprocket support arms 42 is preferably on the sprocket support body 16 arranged when the bicycle sprocket assembly 11 at the bicycle hub assembly 10 is appropriate.

As in the 5 and 6 shown includes the first sprocket support member 32 preferably a plurality of first Kettenradstützarme 35 and the second sprocket support member 34 includes several second Kettenradstützarme 42 , The first and second sprocket support members 32 and 34 are with seven first sprocket support arms 35 and seven second sprocket support arms 42 although the sprocket support members may have any suitable number of sprocket support arms.

Each of the first sprocket support arms 35 has a first proximal end 35a and a first distal end 35b on, like in the 7 and 8th shown. The majority of the first sprocket support arms 35 extends so that the first distal end 35b is further spaced from the rotational center axis A than the first proximal end 35a , The first distal end 35b is set up to be in a condition where the bicycle sprocket assembly 11 at the bicycle hub assembly 10 is attached, from the bicycle hub assembly 10 in the radial direction with respect to the rotational center axis A is spaced. As in the 5 and 6 Shown are the plurality of first sprocket support arms 35 spaced apart from each other in a circumferential direction with respect to the rotational center axis A.

As in the 7 and 8th 1, each of the first sprocket support arms 35 has a plurality of first radially extending portions or parts, respectively 35c and a plurality of first axially extending parts or sections or parts 35d on. The plurality of first radially extending parts 35c and the plurality of first axially extending parts 35d are alternately arranged in an axial direction parallel to the rotational center axis A. The alternately arranged first radially extending parts 35c and the first axially extending parts 35d provide several steps set up to support the multiple bicycle sprockets. The first radially extending parts 35c and the first axially extending parts 35d are alternately in the first axial direction D1 of the hub engaging portion 30 arranged to form a plurality of steps for supporting the plurality of sprockets, such as the sprockets 18 to 21 , are furnished.

Each of the second sprocket support arms 42 has a second proximal end 42a and a second distal end 42b on, like in 7 shown. The several second sprocket support arms 42 extend so that the second proximal end 42a further from the rotational center axis A than the second distal end 42b is spaced. The second proximal end 42a is set up to be in a condition where the bicycle sprocket assembly 11 at the bicycle hub assembly 10 is attached, from the bicycle hub assembly 10 in the radial direction with respect to the rotational center axis A is spaced. As in the 5 and 6 Shown are the multiple second Kettenradstützarme 42 in the circumferential direction with respect to the rotational center axis A from each other.

As shown in FIGS. 7 and 8, each of the second sprocket support arms 42 a plurality of second radially extending parts or sections or parts 42c and a plurality of second axially extending parts or sections or parts 42d on. The plurality of second radially extending parts 42c and the plurality of second axially extending parts 42d are alternately arranged in an axial direction parallel to the rotational center axis A. The alternately arranged second radially extending parts 42c and the second axially extending parts 42d provide several steps set up to support the multiple bicycle sprockets. The second radially extending parts 42c and the second axially extending parts 42d are alternately in the second axial direction D2 of the hub engaging portion 30 arranged to form a plurality of steps that are adapted to the plurality of sprockets, such as sprockets 23 to 26 to support.

As in the 5 to 8th 15, each of the plurality of sprocket support arms, such as the first and second sprocket support arms 35 and 42, has a radially inner peripheral surface and a radially outer peripheral surface. Each of the plurality of first sprocket support arms 35 has a first radially inner peripheral surface 35e and a first radially outer peripheral surface 35f on. Each of the plurality of second sprocket support arms 42 has a second radially inner peripheral surface 42e and a second radially outer peripheral surface 42f on. The radially outer peripheral surface, like the first radially outer peripheral surface 35f and the second radially outer peripheral surface 42f , is set up to support at least one bicycle sprocket. The first radially outer peripheral surface 35f is set up to at least one Fahrradkettenrad, like that in the 7 and 8th sprocket shown 19 to support. The second radially outer peripheral surface 42f is set up to have at least one bicycle sprocket, such as the one in the 7 and 8th sprocket shown 25 , supports.

As in 7 and 8th is shown at least one reinforcing section 50 on the radially inner peripheral surface, such as the first radially inner peripheral surface 35e of the first sprocket support arm 35 or the second radially inner peripheral surface 42e the second Kettenradstützarms 42 provided to the rigidity of the Kettenradstützelements 28 to improve. Preferably at least one reinforcing section 50 at least one of the first radially inner peripheral surface 35e and the second radially inner peripheral surface 42e intended. As in the 5 . 7 and 8th are shown, a plurality of reinforcing sections 50 on the first radially inner peripheral surfaces of the plurality of first sprocket support arms 35 intended. Seven reinforcement sections 50 are provided, although any suitable number of reinforcement sections may be used.

Referring to 5 is every reinforcement section 50 substantially U-shaped and between adjacent first sprocket support arms 35 arranged. A reinforcing section 50 is between adjacent first sprocket support arms 35 arranged. A first part 50a the reinforcing portion 50 at one of the first radially inner peripheral surface 35e of the first sprocket support arm 35 provided, and a second part 50b of the reinforcing section 50 is at the other of the first radially inner peripheral surface 35e of the first sprocket support arm 35 intended. The reinforcement sections 50 are similarly between the remaining first sprocket support arms 35 arranged. Alternatively, the reinforcing sections 50 at the second radially inner circumferential surfaces between adjacent second Kettenradstützarmen 42 be arranged.

As in 7 shown is the Kettenradstützelement 28 made of a metallic material. The metallic material comprises an aluminum alloy. Alternatively, as in 8th shown, the sprocket support element 28 made of a non-metallic material. The non-metallic material comprises fiber reinforced plastic.

With reference to the 3 . 7 and 8th has the sprocket 18 essentially a sprocket body and a plurality of sprocket teeth 18a on, which are provided on an outer periphery of the sprocket body. The plurality of teeth 18a are circumferentially spaced and extend radially and outwardly from the outer circumference of the sprocket body. The middle of the sprocket 18 is with a Kettenradbefestigungsabschnitt 18b provided to be adapted to the sprocket support member 28 to be attached. The sprocket body has a first axial side or large sprocket side 18c on top of the spoke attachment flange 13c facing (ie, an input direction) and a second axial side or small sprocket side 18d , which faces the next smaller sprocket (sprocket 19 ie an exit direction). Each of the several sprockets 18 to 26 is set substantially similar, so a description thereof is omitted. For example, as in 3 shown the sprocket 19 similarly decorated to multiple teeth 19a , a sprocket attachment portion 19b , a first axial side 19c and a second axial side 19d exhibit.

With reference to 6 is a section 52 in each of the first and second radially extending portions 35c and 42c the first and second Kettenradstützarme 35 respectively. 42 educated. The cutout 52 may be any suitable shape, such as the substantially flat bottom V shape used in FIG 6 is shown. The cutout 52 extends from a radially extending portion to the adjacent radially extending portion in the axial direction. As in 3 . 7 and 8th every cut is shown 52 set up for a bet 54 to facilitate the spacing of adjacent sprockets and rigidly attach the sprockets to the sprocket support member 28. The stakes 54 are arranged to be located between adjacent sprockets, thereby properly spacing adjacent sprockets. Thus, for those in the 1 to 8th illustrated nine-sprocket configuration eight inserts along the first and second Kettenradstützarme 35 and 42 and the hub engaging part 30 arranged.

As in the 3 . 7 and 8th shown is each of the sprockets 18 to 26 on one of the first or second sprocket support elements 32 or 34 or the hub engaging portion 30 appropriate. The sprocket 18 is on the first sprocket support member 32 arranged such that the Kettenradbefestigungsabschnitt 18b from the first axially extending portions 35d of the plurality of first sprocket support arms 35 of the first sprocket support member 32 is received. A first axial side 18c of the sprocket 18 lies radially on a first extension part 35c at. A second axial side 18d the sprocket 18 is located on a first side 54a of the insert 54 at. Adhesive is between the second axial sides (contact sides) 18d of the sprocket 18 or the first pages 54a of the insert 54 arranged to rigidly attach the sprocket 18 on the sprocket support member 26 to facilitate. There may be alternative or additional means for attaching the sprocket 18 be used on the sprocket support member 28, such as diffusion bonding or riveting.

The sprocket 19 is on the first sprocket support member 32 arranged such that the Kettenradbefestigungsabschnitt 19b from the first axially extending part 35d the plurality of first Kettenradstützarme 35 of the first sprocket support member 32 is recorded. One axial side 19c of the sprocket 19 lies on a first radially extending part 35c and the second page 54b of the insert 54 at. A second axial side 19d of the sprocket 19 is located on a first page 54a another use 54 at. Adhesive is between the first axial side 19c and the second axial side 19d (touching sides) of the sprocket 19 or the two missions 54 arranged to rigidly attach the sprocket 19 on the sprocket support member 26 to enable. Alternative or additional means for attaching the sprocket 19 at the sprocket support member 28, such as diffusion bonding or riveting may be used.

The remaining sprockets 20 to 26 are similarly on the sprocket support member 28 attached, so that their assembly is not described here.

Regarding 3 is the sprocket support element 28 with the rear bicycle hub assembly 10 connected such that the hub engagement profile 30c at the radially inner peripheral surface 30a is formed with the spline section 16a the sprocket support 16 the rear hub assembly 10 is engaged. A spacer 56 is on the sprocket support body 16 adjacent to a distal end 42b the plurality of second Kettenradstützarme 42 arranged. A locking ring 58 is at the sprocket support body adjacent to the spacer 56 arranged. The spacer 56 correctly positions the circlip 58 so that a threaded section 58a ( 4 ) of the locking ring with the threaded portion 16c the sprocket support 16 in threaded engagement, whereby the rear Fahrradkettenradanordnung 11 on the rear bicycle hub assembly 10 is attached.

Referring to 9 is a first alternative rear sprocket assembly 100 shown, the rear sprocket assembly 11 of the 1 to 8th can replace. The first alternative rear sprocket assembly 100 is also set up so that it attaches to the rear bicycle hub assembly 10 in a substantially similar manner as the rear sprocket assembly 11 of the 1 to 8th is mounted and is adapted to be rotatable about the rotational center axis A around. The first alternative rear sprocket assembly 100 includes several bicycle sprockets. The first rear sprocket assembly 100 has eleven rear sprockets 101 to 111 on. As shown, the first rear sprocket comprises 101 Forty-four sprocket teeth and the eleventh rear sprocket 111 includes nine sprocket teeth. Preferably, a tooth number difference between the smallest sprocket (ie the eleventh rear sprocket 111 ) of the plurality of bicycle sprockets and the largest sprocket (ie, the first rear sprocket 101) of the plurality of sprocket wheels equal to or greater than twenty-five. More preferable is a tooth number difference between the smallest sprocket (ie the eleventh rear sprocket 111 ) of the plurality of bicycle sprockets and a largest sprocket (the first rear sprocket 101 ) of the plurality of bicycle sprockets equal to or greater than thirty-five. In the in 9 illustrated exemplary embodiment has the largest sprocket (ie, the first rear sprocket 101 ) of the plurality of bicycle sprockets has a total number of teeth equal to or greater than forty-four. The smallest sprocket (ie the eleventh sprocket 111 ) of the plurality of bicycle sprockets has a total number of teeth equal to or less than ten.

Thus, the first alternative rear sprocket assembly 100 a first sprocket (ie, the first rear sprocket 101 ) having a first tooth number greater than or equal to forty-four and a second sprocket (ie, eleventh rear sprocket 111 ) having a second number of teeth that is less than or equal to ten. The first alternative rear sprocket assembly 100 has a tooth order of 9-11-13-15-17-20-23-27-32-38-44.

Referring now to 10 is a second alternative rear sprocket assembly 200 shown, the rear sprocket assembly 11 of the 1 to 8th can replace. The second alternative rear sprocket assembly 200 is also set up so that it attaches to the rear bicycle hub assembly 10 in a substantially similar manner as the rear sprocket assembly 11 of the 1 to 8th is attached and is arranged so that it is rotatable about the rotational center axis A around. The second alternative rear sprocket assembly 200 includes several bicycle sprockets. As in 10 As shown, the rear sprocket assembly has twelve rear sprockets 201 to 212 on. As shown, the first rear sprocket has 201 fifty sprocket teeth and the twelfth rear sprocket 212 ten sprocket teeth. In the illustrated embodiment, the first rear sprocket 201 (ie the largest sprocket), preferably a total number of teeth greater than or equal to fifty. Preferably, the twelfth rear sprocket 212 (ie the smallest sprocket) has a second number of teeth that is less than or equal to ten. Preferably, a tooth number difference between the smallest sprocket (ie the twelfth rear sprocket 212 ) of the plurality of bicycle sprockets and the largest sprocket (ie, the first rear sprocket 201 ) of the plurality of bicycle sprockets equal to or greater than twenty-five. More preferable is a tooth number difference between the smallest sprocket (ie the twelfth rear sprocket 212 ) of the plurality of bicycle sprockets and the largest sprocket (ie, the first rear sprocket 201) of the plurality of sprocket wheels equal to or greater than thirty-five.

Thus, the second alternative rear sprocket assembly 200 a first sprocket (ie, the first rear sprocket 201 ), the one Total number of teeth greater than or equal to 50 has. In addition, the second alternative rear sprocket assembly 200 a second sprocket (ie the twelfth sprocket 212 ) having a second tooth number that is less than or equal to ten. The second alternative rear sprocket assembly 200 has a tooth order of 10-12-14-16-18-21-24-28-32-36-42-50.

To understand the scope of the present invention, it is important to understand that the term "comprising" and its derivatives, as used herein, are intended to be open-ended terms that include the presence of the recited features, elements, components, groups, Specify items and / or steps, but does not exclude the presence of other features, elements, components, groups, items, and / or steps not listed. The foregoing also applies to words having similar meanings as the terms "including," "having," and their derivatives. Also, the terms "part", "region", "section", "component" or "element" when used in the singular may have dual meaning of single part or of a plurality of parts or parts.

As used herein, the following directional terms refer to "frame-facing side", "non-frame-facing side", "forward", "backward", "front", "rear", "above", "below", "up", "down" "," Top "," bottom "," side "," vertical "and" horizontal "," vertical "and" transverse "and any other similar directional terms such directions of a bicycle in an upright running position, which is equipped with the rod end device , Accordingly, these direction terms, as used to describe the handlebar end actuator, should be interpreted relative to a bicycle in an upright riding position on a horizontal surface, and equipped with the handlebar end actuator. The terms "left" and "right" are used to refer to "right" as the right side of a bicycle when viewed from the rear end of the bicycle and "left" as the left side of a bicycle when viewed from the rear end of the bicycle ,

In addition, it will be understood that despite the possible use herein of the terms "first" and "second" to describe various components, these components are not to be construed as limited. These terms are for the sole purpose of distinguishing one component from another. For example, therefore, a first component as described above could also be termed a second component, and vice versa, without departing from the teachings of the present invention. The term "fastened" or "fastened" as used herein includes embodiments in which an element is directly attached to another element by directly fixing the element to the other element; and embodiments in which the member is indirectly attached to the other member by means of an intermediary member (s), which are in turn fixed to other member (s); and finally, in which one element is integral with another element, i. is essentially a part of the other element. This concept also applies to words of similar meaning, e.g. "Connected", "coupled", "mounted", "cohesively connected", "fixed" and their descendants. Finally, terms of degree such as "substantially", "approximately" and "approximately" as used herein mean a proportionate amount of deviation from the modified term such that the end result is not significantly altered.

While only selected embodiments have been chosen to illustrate the present invention, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made therein without departing from the scope of the invention as defined in the appended claims. For example, unless otherwise specified, the size, shape, position or orientation of the various components may be changed as needed and / or desired as long as the changes do not materially affect their intended function. Unless otherwise stated, components directly connected or contacted with one another may have intermediate structures disposed therebetween as long as the changes do not materially affect their intended function. The functions of an element can be performed by two, and vice versa, unless stated otherwise. The structures and functions of one embodiment may be adopted in another embodiment. It is not necessary that all advantages be present simultaneously in a particular embodiment. Any feature that is unique in relation to the prior art may be considered alone or in combination with other features as a separate description of another invention on the part of the Applicant, including structural and / or functional concepts provided by such feature (s). such features are embodied. The foregoing descriptions of the embodiments according to the present invention are therefore provided for the purpose of illustration only, and not for the purpose of limiting the invention, such as defined by the appended claims and their equivalents.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 15/436590 [0001]

Claims (26)

Bicycle sprocket assembly comprising: a sprocket support member comprising a hub engaging portion; a first sprocket support member extending from the hub engagement portion in a first axial direction parallel to a rotational center axis of the bicycle sprocket assembly; and a second sprocket support member extending from the hub engagement portion in a second axial direction parallel to the rotational center axis, the second axial direction being opposite to the first axial direction; wherein at least one of the first sprocket support member and the second sprocket support member has a plurality sprocket support arms. Bicycle sprocket assembly according to Claim 1 wherein the plurality of sprocket support arms are spaced apart in a circumferential direction with respect to the rotational center axis. Bicycle sprocket assembly according to Claim 1 or 2 wherein each of the sprocket support arms has a proximal end and a distal end, the plurality of sprocket support arms extending such that the distal end is farther from the rotational center axis than the proximal end. Bicycle sprocket assembly according to Claim 1 or 2 wherein each of the sprocket support arms has a proximal end and a distal end, the plurality of sprocket support arms extending such that the proximal end is farther from the rotational center axis than the distal end. Bicycle sprocket assembly according to Claim 1 wherein the first sprocket support member comprises a plurality of first sprocket support arms; and the second sprocket support member comprises a plurality of second sprocket support arms. Bicycle sprocket assembly according to Claim 5 wherein the plurality of first sprocket support arms are spaced apart in a circumferential direction with respect to the rotational center axis; and the plurality of second sprocket support arms are spaced from each other in the circumferential direction. Bicycle sprocket assembly according to Claim 5 or 6 wherein each of the first sprocket support arms has a first proximal end and a first distal end; the plurality of first sprocket support arms extend such that the first distal end is farther from the rotational center axis than the first proximal end; each of the second sprocket support arms has a second proximal end and a second distal end; and the plurality of second sprocket support arms extend such that the second proximal end is farther from the rotational center axis than the second distal end. Fahrradkettenradanordnung according to one of Claims 1 to 7 wherein the sprocket support member is made of a non-metallic material. Bicycle sprocket assembly according to Claim 8 wherein the non-metallic material comprises fiber reinforced plastic. Fahrradkettenradanordnung according to one of Claims 1 to 7 wherein the sprocket support member is made of a metallic material. Bicycle sprocket assembly according to Claim 10 wherein the metallic material comprises an aluminum alloy. Fahrradkettenradanordnung according to one of Claims 1 to 11 wherein the hub engagement portion has a radially inner peripheral surface and a radially outer peripheral surface, a hub engagement profile is formed on the radially inner circumferential surface. Bicycle sprocket assembly according to Claim 12 wherein the hub engagement profile comprises a plurality of splines. Bicycle sprocket assembly according to Claim 12 or 13 wherein the radially outer peripheral surface is configured to support at least one bicycle sprocket. Bicycle sprocket assembly according to Claim 2 or 4 wherein each of the sprocket support arms has a plurality of radially extending portions and a plurality of axially extending portions, the plurality of radially extending portions and the plurality of axially extending portions alternately arranged in an axial direction parallel to the rotational center axis. Fahrradkettenradanordnung according to one of Claims 5 to 7 wherein each of the first sprocket support arms has a plurality of first radially extending portions and a plurality of first axially extending portions; the plurality of first radially extending parts and the plurality of first axially extending parts are alternately arranged in an axial direction parallel to the rotational center axis; each of the second sprocket support arms has a plurality of second radially extending portions and a plurality of second axially extending portions; and the plurality of second radially extending parts and the plurality of second axially extending parts are alternately arranged in an axial direction parallel to the rotational center axis. Fahrradkettenradanordnung according to one of Claims 2 to 4 and Claim 15 wherein each of the sprocket support arms has a proximal end and a distal end, the distal end being adapted to be spaced from a bicycle hub assembly in a radial direction with respect to the rotational center axis in a state in which the bicycle sprocket assembly is mounted to the bicycle hub assembly is. Fahrradkettenradanordnung according to one of Claims 5 to 7 and Claim 16 wherein each of the first sprocket support arms has a first proximal end and a first distal end; wherein the first distal end is adapted to be spaced from a bicycle hub assembly in a radial direction with respect to the rotational center axis in a state in which the bicycle sprocket assembly is mounted to the bicycle hub assembly; each of the second sprocket support arms has a second proximal end and a second distal end; and the second proximal end is configured to be spaced from a bicycle hub assembly in a radial direction with respect to the rotational center axis in a state in which the bicycle sprocket assembly is attached to the bicycle hub assembly. Fahrradkettenradanordnung according to one of Claims 2 to 4 and Claim 17 wherein each of the plurality of sprocket support arms has a radially inner peripheral surface and a radially outer peripheral surface, the radially outer circumferential surface is configured to support at least one bicycle sprocket. Bicycle sprocket assembly according to Claim 19 wherein at least one reinforcing portion is provided on the radially inner peripheral surface. Fahrradkettenradanordnung according to one of Claims 5 to 7 and Claim 16 and Claim 18 wherein each of the plurality of first sprocket support arms has a first radially inner peripheral surface and a first radially outer peripheral surface; the first radially outer peripheral surface is configured to support at least one bicycle sprocket; each of the plurality of second sprocket support arms has a second radially inner peripheral surface and a second radially outer peripheral surface; and the second radially outer peripheral surface is configured to support at least one bicycle sprocket. Bicycle sprocket assembly according to Claim 21 wherein at least one reinforcing portion is provided on at least one of the first radially inner peripheral surface and the second radially inner peripheral surface. Fahrradkettenradanordnung according to one of Claims 1 to 22 , Further comprising a plurality of bicycle sprockets, wherein a tooth number difference between a smallest sprocket of the plurality of sprocket wheels and a largest sprocket of the plurality of sprocket wheels is equal to or greater than twenty-five. Fahrradkettenradanordnung according to one of Claims 1 to 22 further comprising a plurality of bicycle sprockets, wherein a tooth number difference between a smallest sprocket of the plurality of sprocket wheels and a largest sprocket of the plurality of sprocket wheels is equal to or greater than thirty-five. Fahrradkettenradanordnung according to one of Claims 1 to 24 further comprising a plurality of bicycle sprockets, wherein a largest sprocket of the plurality of sprocket wheels has a total number of teeth equal to or greater than forty-four. Fahrradkettenradanordnung according to one of Claims 1 to 25 , further comprising a plurality of bicycle sprockets, wherein a smallest sprocket of the plurality of sprocket wheels has a total number of teeth equal to or less than ten.

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